Honeywell RTH7500D User Manual

69-1730

60

Cannot set 

System setting 

to Cool.

Check Installer Setup Number 0170, 

Heating and/or Cooling System Type; make 

sure the setting matches the installed 

heating and/or cooling system.

“Heat On” is 

not shown in 

the display.

Set the System setting to Heat and set the 

temperature setting above the room 

temperature. If “Heat On” is shown solidly in 

the display, but the heating system does not 

turn on, see “Heating system does not turn 

on” in the Troubleshooting Tips.

“Cool On” is 

not shown in 

the display.

Set the System setting to Cool and set the 

temperature setting below the room 

temperature. If “Cool On” is shown solidly in 

the display, but the cooling system does not 

turn on, see “Cooling system does not turn 

on” in the Troubleshooting Tips.

“Wait” shows in 

the display.

Compressor minimum-off timer is active. 

Wait up to five minutes for the cooling or 

heating system to turn on.

Fan does not 

turn on in a call 

for heat 

(electric fur-

naces only).

Check Installer Setup Number 0180, Fan 

Control in Heating, and make sure it is set 

to Electric Heat.

Heat pump 

puts out cool 

air in the heat 

mode and 

warm air in the 

cool mode 

(heat pumps 

only).

Check Installer Setup Number 0190, Heat 

Pump Changeover Valve, and make sure 

the setting matches the changeover 

required by the installed heat pump.

69-1730.fm  Page 60  Tuesday, July 13, 2004  12:45 PM